True Colours Industries Constrictor Mains Powerlead - 1.5 Metre - TCI Constrictor Powerleads and Powerblocks use 8 cores of Silver Plated PTFE insulated Copper and one 2.5mm2 PVC insulated copper earth wire. The eight cores are wound to naturally filter RFI without using sound degrading capacitors or inductors. The Live and more Home HiFi Systems